books.google.ca - In this book, bursting with more information than any field guide could hold, the well-known author and birder Pete Dunne introduces readers to the "Cape May School of Birding." It's an approach to identification that gives equal or more weight to a bird's structure and shape and the observer's overall...https://books.google.ca/books/about/Pete_Dunne_s_Essential_Field_Guide_Compa.html?id=Y_y-1Xe1KsYC&utm_source=gb-gplus-sharePete Dunne's Essential Field Guide Companion